The graph M?E@ADKKCO?XDDwE?

This graph is not embeddable.

Unembeddable subgraph

The graph
M?CO@EBHAOgoe?w@_
is a subgraph of this graph. It is not embeddable. Hence, this
graph is not embeddable either. One possible monomorphism
of the unembeddable graph into this one, is given by: